.big{
    margin-left: 10%;
    width: 80%;
    height: 100%;
}
.us{
    margin:0 auto;
    width:100%;
    overflow: hidden;
}
/* --------------------关于我们第一行-------------------- */
h1.first{
    border-bottom: #F1F1F1 1px solid;
    font-size: 12px;
    line-height: 40px;
    height: 40px;
    /*margin:20px auto;*/
    margin-top: 110px;
    width:100%;
}
h1.first span{
    float:right;
    color:dimgray;
}
h1.first a {
    width: 100px;
    display: block;
    text-align: center;
    color: #fff;
    float: left;
}
.first1{
    background-color: #5EA51B;
}
.first2 {
    background-color: #8BBF5D;
}
.left{
    width: 70%;
    float: left;
    overflow: hidden;
    line-height:26px;
    font-size: 14px;
    border-right: 3px dashed #000;
}
.left h2{
    font-size:22px;
    margin-bottom:20px;
}
.left p{
    margin-bottom:20px;
}
.about_c,.left{
    margin:20px 0;
}
.left ul{
    width:100%;
}
.right{
    width:28%;
    float: right;
    font-size: 14px;
    overflow: hidden;
    line-height:30px;
}
.about_c{
    padding:10px 0 0 10px;
    line-height:26px;
}
.about_c p img{
    display: block;
    width:100%;
    height: 220px;
    background: url("../images/12.jpg") no-repeat;
    background-size: 100% 100%;
}
.about_c span{
    color:#19A566;
}

